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US6520237B1 - Variable spacing strand coating system and method - Google Patents

Variable spacing strand coating system and method Download PDF

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Publication number
US6520237B1
US6520237B1 US09621721 US62172100A US6520237B1 US 6520237 B1 US6520237 B1 US 6520237B1 US 09621721 US09621721 US 09621721 US 62172100 A US62172100 A US 62172100A US 6520237 B1 US6520237 B1 US 6520237B1
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US
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Prior art keywords
coating
strand
material
guide
roller
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
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US09621721
Inventor
Edward W. Bolyard, Jr.
Daniel D. Bourget
Mairi C. MacLean
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Illinois Tool Works Inc
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Illinois Tool Works Inc
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    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D11/00Other features of manufacture
    • D01D11/06Coating with spinning solutions or melts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0241Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to elongated work, e.g. wires, cables, tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00Guides for filamentary materials; Supports therefor
    • B65H57/14Pulleys, rollers, or rotary bars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00Guides for filamentary materials; Supports therefor
    • B65H57/16Guides for filamentary materials; Supports therefor formed to maintain a plurality of filaments in spaced relation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00Guides for filamentary materials; Supports therefor
    • B65H57/26Supports for guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1798Surface bonding means and/or assemblymeans with work feeding or handling means with liquid adhesive or adhesive activator applying means

Abstract

Strand coating methods and systems having an applicator head pivotally mounted adjacent a substrate, a coating material dispenser mounted on the applicator head, a strand guide mounted on the applicator head, wherein the strand guide and the coating material dispenser are adjustably positionable in unison relative to the substrate by pivoting the applicator head to vary the spacing of the strands relative to the substrate.

Description

BACKGROUND OF THE INVENTION

The invention relates generally to strand coating, and more particularly to variable spacing strand coating systems and methods therefor.

An object of the present invention is to provide novel strand coating methods and systems that overcome problems in and improve upon the prior art.

Another object of the invention is to provide in some embodiments thereof novel strand coating methods and systems that are economical.

A further object of the invention is to provide in some embodiments thereof novel strand coating methods and systems that are reliable.

Another object of the invention is to provide in some embodiments thereof novel strand coating methods and systems for variably spacing a plurality of strands.

Another object of the invention is to provide in some embodiments thereof novel strand coating methods and systems for variably spacing a plurality of strands relative to a substrate without changing coating material dispensers or strand guides.

A further object of the invention is to provide in some embodiments thereof novel strand coating methods and systems for variably spacing a plurality of strands without resetting system fluid and air pressure.

Yet another object of the invention is to provide in some embodiments thereof novel strand coating methods and systems for more accurately aligning one or more strands relative to a coating material dispenser.

Another object of the invention is to provide in some embodiments thereof novel strand coating methods and systems that are less susceptible to misalignment.

Still another object of the invention is to provide in some embodiments thereof novel strand coating methods and systems having adjustable strand guides.

Another object of the invention is to provide in some embodiments thereof novel strand coating methods and systems having coating material dispensers with strand guides coupled thereto.

A further object of the invention is to provide in some embodiments thereof novel strand coating methods and systems having coating material dispensers with strand guides coupled thereto that are pivotally adjustable relative to a substrate.

A more particular object of the invention is to provide in some embodiments thereof novel strand coating methods and systems comprising a strand guide having a guiding surface at an angle relative to a moving substrate, a plurality of moving strands disposed side by side over the guiding surface of the strand guide, and a coating material dispenser disposed adjacent the plurality of strands.

Another more particular object of the invention is to provide in some embodiments thereof novel strand coating methods and apparatuses comprising an applicator head pivotally mounted on a support member, a coating material dispenser mounted on the applicator head, a strand guide mounted on the applicator head, whereby the strand guide and the coating material dispenser are adjustably positionable in unison by pivoting the applicator head.

Yet another more particular object of the invention is to provide in some embodiments thereof novel strand coating methods and apparatuses comprising a coating material applicator having a dispenser with at least one orifice, a roller pin extending from a roller arm adjustably coupled to the coating material applicator by a pivot member, and a strand guide roller having a plurality of grooves disposed about a rotation axis thereof, the strand guide roller rotatably coupled to the roller pin.

Still another more particular object of the invention is to provide in some embodiments thereof novel strand coating systems and methods comprising drawing a plurality of strands side by side, in spaced apart relation over a strand guide adjacent a substrate, applying coating material from a coating material dispenser onto the plurality of strands on a downstream side of the strand guide, depositing the plurality of strands with the coating material applied thereto onto the substrate, adjusting a spacing of the plurality of strands on the substrate by changing an orientation of the strand guide relative to the substrate.

These and other objects, aspects, features and advantages of the present invention will become more fully apparent upon careful consideration of the following Detailed Description of the Invention and the accompanying Drawings, which may be disproportionate for ease of understanding, wherein like structure and steps are referenced generally by corresponding numerals and indicators.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a strand coating system according to an exemplary embodiment of the invention.

FIG. 2 is a partial view of a strand coating applicator.

FIG. 3 is a partial view of an exemplary coating material dispenser in a first configuration.

FIG. 4 is another partial view of an exemplary coating material dispenser in a second configuration.

FIG. 5 is another view of an exemplary strand guide mounted to an exemplary strand coating applicator.

DETAILED DESCRIPTION OF THE INVENTION

In FIG. 1, the strand coating system comprises a coating material dispenser 10 that applies a coating material, for example a hot melt adhesive or an atomized substance, onto one or more strands, identified collectively by numeral 20, moving relative thereto.

The strands 20 may, for example, be elastic rubber or Lycra materials used in the manufacture of diapers, incontinence pads and hospital garments. The strands may also be wire or cable, for example fiber optic cable, or some other elongated member onto which it is desirable to deposit a coating material.

In FIG. 3, the exemplary dispenser 10 includes a plurality of conduits 12, shown only partially and in phantom, terminating at corresponding orifices arranged in a spaced apart series on a side 14 of the dispenser. The orifices of the exemplary dispenser each emit therefrom a corresponding coating material flow 16, which may be a substantially continuous or discrete vacillating filament or an atomized spray, toward a corresponding strand in alignment with the orifice.

In FIG. 3, some of the orifices 13 are illustrated schematically at the origin of the corresponding flows 16 spaced apart evenly in a single row on the dispenser. The orifices may be recessed or protrude from the side 14 of the dispenser. In other embodiments, the spacing between adjacent orifices is not necessarily the same. Alternatively, there may be more than one row or series of orifices arranged in alignment with the direction of the strand so that more than one orifice dispenses coating material onto each strand. In other embodiments, the orifices of adjacent rows may be offset.

Coating material dispensers suitable for use with the present invention are disclosed for example in U.S. Pat. No. 5,902,540, entitled “Meltblowing Method and Apparatus”, and U.S. Pat. No. 5,904,298, entitled “Improved Meltblowing Method and System”. These preferred exemplary devices are capable of producing filaments and atomized spray patterns that vacillate predominately non-parallel to the axis of the strands and provide precise control over the coating material dispensed therefrom.

In one embodiment, illustrated in FIG. 3, the coating material dispenser 10 dispenses substantially continuous coating material filaments 17 having a repeating, generally omega shaped pattern from the orifices thereof, only one of which is illustrated, as disclosed more fully in co-pending U.S. application Ser. No. 09/143,883 entitled “Omega Spray Pattern And Method Therefor”, which is assigned commonly with the present application and is incorporated herein by reference.

In other embodiments, the coating material dispenser may be a spiral spray nozzle having a single orifice that dispenses a corresponding spiral filament onto one or more strands, or alternatively some other coating material dispensing apparatus.

In FIG. 5, the exemplary coating material dispenser 10 is coupled to or mounted on an applicator head 40, which supplies coating material and in some embodiments heated air to the coating material dispenser, for example through a nozzle module 41, as is known generally by those having ordinary skill in the art.

In some applications, strands having coating material applied thereto are adhered to or deposited on a substrate moving relative to the coating material dispenser, usually in unison with the strands. The coating material dispenser however may move relative to the one or more strands and any substrate.

A strand guide having a guiding surface is preferably disposed adjacent the coating material dispenser, preferably on an upstream side thereof, to guide the strands past the coating material dispenser. The one or more strands are generally drawn over the guiding surface of the strand guide, which aligns the strands side by side in spaced apart relation relative to corresponding orifices of the coating material dispenser, for dispensing coating material dispensed therefrom onto the strands.

In the exemplary embodiment of FIG. 1, the strand guide is a rotatable roller 50 and the strand guiding surface thereof includes a plurality of spaced apart grooves 52 disposed thereabout. The strands are each disposed in a corresponding groove 52. The spacing of at least some of the grooves generally corresponds with the spacing of the dispenser orifices. In the exemplary embodiment, the roller aligns and guides the strands adjacent a corresponding orifice of the coating material dispenser, as illustrated in FIG. 3. In alternative embodiments, the strand guide may have other configurations besides a channeled roller.

The strand guide is preferably coupled to the coating material dispenser, in fixed relation relative thereto. In the exemplary embodiment, the coating material dispenser and strand guide are both coupled to the applicator head, thereby eliminating or at least substantially reducing any misalignment therebetween, for example misalignment caused by vibrating machinery, as frequently occurs in prior art systems having the strand guide coupled to machinery other than the coating material dispenser.

In FIGS. 1, 2 and 5, the exemplary roller guide 50 is rotatably coupled to a roller axle or shaft 54, preferably with roller bearings. In FIGS. 1 and 2, the exemplary roller guide 50 is retained on the roller shaft 54 by a collar 56 fastened thereto with a set screw or other fastening means.

In FIGS. 2 and 5, the roller shaft 54 extends from a roller arm 58 adjustably coupled to the applicator head 40. The roller shaft is also preferably adjustably coupled to the roller arm, for example by threaded engagement with a threaded opening 59 of the roller arm 58. In the exemplary embodiment, the roller guide 50 and/or roller shaft 54 is adjustable in either direction along the axis of the shaft 54 to align the guide grooves of the roller 50 relative to the one or more orifices of the coating material dispenser.

In FIGS. 2 and 5, the roller arm 58 is pivotally coupled to a guide arm 62 by a pivot pin 64 extending from one or the other. The guide arm 62 is also preferably adjustably coupled to the applicator, for example by a pivot pin 66 extending from a bracket 63 mounted thereon.

In FIG. 5, the guide roller 50 may be adjustably positioned toward and away from a bottom side 42 the applicator head 40. The guide roller 50 may also be adjustably positioned in the upstream and downstream direction of the strands, closer or farther away from the dispenser.

In the exemplary embodiment of FIG. 5, the roller axle 54 is secured in the opening 59 of the roller arm 58 by a bolt 60 disposed through prongs 61 thereof, which are clamped about the shaft 54 upon tightening the bolt. The guide arm 62 is similarly secured to the pivot pin 66, and the roller arm 58 is similarly secured to the guide arm 62. In other embodiments, the guide roller is adjustably coupled to the applicator head by other structure.

In some embodiments of the invention, the strand guide is adjustably mounted on a pivot member to change the orientation of the guiding surface of the strand guide to vary the spacing of the strands relative to the substrate. The coating material dispenser is preferably adjustable in unison with the strand guide, for example by adjusting the position or orientation of the applicator head, to facilitate application of the coating material onto the strands.

In the exemplary embodiments of FIGS. 3 and 4, spacing between the plurality of strands 20 as they are deposited onto the substrate 30 is varied by changing the orientation of the strand guide, not illustrated, and particularly the guiding surface thereof relative to a surface 32 of the substrate. The plane of the strands 20 corresponds generally to the orientation of the guiding surface of the strand guide relative to the substrate surface 32.

In the embodiment of FIG. 1, the grooved guiding surface of the strand guide 50 is parallel to the substrate surface 32, so that the plane of the strands 20 is also parallel to the substrate, as illustrated best in FIG. 3. The spacing between adjacent strands relative to the substrate surface 32 thus corresponds generally with the spacing between the grooves on the strand guide over which the strands are drawn. In FIG. 3, for example the spacing between the outermost strands is D1.

In FIG. 4, the strand guide has been pivoted to orient the grooved guiding surface thereof at an angle relative to the substrate so that the plane of the strands is at a corresponding angle relative to the substrate. The spacing between adjacent strands relative to the substrate surface 32 is thus reduced in some proportion to the angle between the substrate and the guiding surface of the strand guide over which the strands are drawn. In FIG. 4, the spacing between the outermost strands disposed over an angled strand guide is D2, which is less than the spacing D1 in FIG. 3.

FIGS. 1 and 2 illustrate the applicator head 40 pivotally mounted on a pivot or bolt shaft 70 having an axis substantially transverse to the side by side arrangement of the plurality of orifices, which permits adjustment of the orientation of the coating material dispenser and strands, as illustrated in FIGS. 3 and 4. In FIGS. 3 and 4, the pivot axis of the coating material dispenser and strand guide is aligned substantially in a direction of the moving substrate, which moves into or out of the page of the drawing.

In FIGS. 1 and 2, the pivot shaft 70 extends through a mounting block 72 supported by a support member 74, in the exemplary form of a rod. In FIG. 2, the mounting block 72 includes one or more arcuate slots 76 disposed about the pivot shaft 70. A bolt 77 extends through the corresponding slot 76 and into a threaded bore of the applicator head 40.

Engagement of the bolt 77 with opposite end portions of the slot 76 limits pivoting or rotation of the applicator head 40 about the shaft 70, and engagement of a head portion of the bolt 77 with the mounting block 72 secures the orientation of the applicator head 40 relative thereto upon tightening the bolt 77.

While the foregoing written description of the invention enables one of ordinary skill to make and use what is considered presently to be the best mode thereof, those of ordinary skill will understand and appreciate the existence of variations, combinations, and equivalents of the specific exemplary embodiments herein. The invention is therefore to be limited not by the exemplary embodiments herein, but by all embodiments within the scope and spirit of the appended claims.

Claims (22)

What is claimed is:
1. A strand coating system comprising:
a substrate;
a strand guide disposed substantially across the substrate,
the strand guide having a guiding surface at an angle relative to the substrate;
a spacing between the substrate and the guiding surface of the strand guide is different at different locations across the substrate;
a coating material dispenser coupled to the strand guide,
the coating material dispenser and strand guide pivotally adjustable about an axis substantially parallel to the substrate.
2. The system of claim 1, the strand guide coupled to the coating material dispenser on an upstream side thereof and in fixed relation relative thereto.
3. The system of claim 2, the coating material dispenser and strand guide are adjustably mounted on a pivot member.
4. The system of claim 1, the strand guide is a roller having a rotation axis disposed substantially across the substrate, the strand guiding surface includes a plurality of spaced apart grooves disposed about the roller.
5. The system of claim 4, the coating material dispenser mounted on an applicator head, the strand guide coupled to the applicator head on an upstream side of the coating material dispenser.
6. The system of claim 4, the coating material dispenser comprises a plurality of orifices arranged side by side, each orifice of the coating material dispenser aligned with a corresponding groove of the strand guide.
7. The system of claim 6, the coating material dispenser mounted on an applicator head pivotally mounted on a pivot shaft substantially transverse to the side by side arrangement of the plurality of orifices.
8. The system of claim 7, the roller rotatably coupled to a roller shaft extending from a roller arm pivotally coupled to the applicator head.
9. The system of claim 6, a plurality of moving strands disposed side by side over the guiding surface of the strand guide, a vacillating filament emanating between each orifice and the corresponding adjacent strand.
10. A strand coating apparatus comprising:
a support member;
an applicator head pivotally mounted on the support member;
a coating material dispenser mounted on the applicator head;
a strand guide mounted on the applicator head,
the strand guide having at least one strand guiding groove, the coating material dispenser having an orifice aligned with not more than one corresponding strand guiding groove.
11. The apparatus of claim 10, the coating material dispenser having a plurality of orifices arranged in a side by side series thereon, the strand guide having a plurality of strand guiding grooves, not more than one orifice of the coating material dispenser aligned with a corresponding strand guiding groove of the strand guide.
12. The apparatus of claim 11, the applicator head pivotally coupled to the support member by a pivot member having an axis aligned non-parallel to the alignment of the series of orifices of the coating material dispenser.
13. A strand coating apparatus comprising:
a coating material applicator having a dispenser with at least one orifice,
the coating material applicator pivotally adjustable about a pivot axis;
a roller shaft extending from a roller arm adjustably coupled to the coating material applicator by a pivot member;
a strand guide roller having a plurality of grooves disposed about a rotation axis thereof,
the rotation axis of the strand guide roller substantially transverse to the pivot axis of the coating material applicator,
the strand guide roller rotatably coupled to the roller shaft.
14. The apparatus of claim 13, a guide arm adjustably coupled to the coating material applicator by a pivot member, the roller arm adjustably coupled to the guide arm by a pivot member.
15. The apparatus of claim 13, the coating material applicator adjustably coupled to a support member by a pivot member.
16. The apparatus of claim 13, the coating material dispenser having a plurality of orifices aligned in a series on a portion thereof, each of the orifices of the coating material dispenser aligned with a corresponding groove of the strand guide roller.
17. The apparatus of claim 16, the coating material applicator pivotally mounted on a shaft substantially transverse to the alignment of the plurality of orifices.
18. A strand coating apparatus comprising:
a coating material applicator having a coating material dispensing orifice,
a roller arm coupled to the coating material applicator;
a roller shaft extending from the roller arm;
a strand guide roller rotatably coupled to the roller shaft, the strand guide roller having a strand guiding groove disposed about a rotation axis thereof,
the strand guide toller spaced apart from the coating material dispensing orifice;
not more than one coating material dispensing orifice aligned with the strand guiding groove of the strand guide roller.
19. The apparatus of claim 18, the roller arm pivotally coupled to the coating material applicator, whereby the strand guide roller is adjustably positioned toward and away from the coating material dispensing orifice.
20. The apparatus of claim 19, a guide arm adjustably coupled to the coating material applicator by a pivot member, the roller arm adjustably coupled to the guide arm by a pivot member.
21. The apparatus of claim 18, the coating material applicator adjustably coupled to a support member by a pivot member, a pivot axis of the pivot member substantially transverse to a rotation axis of the strand guide roller.
22. The apparatus of claim 18, the strand guide roller having a plurality of spaced apart strand guiding grooves disposed about the stand guide roller, the coating material applicator having a plurality of coating material dispensing orifices disposed thereon, each of the coating material dispensing orifices aligned with not more than a corresponding one of the strand guiding grooves of the strand guide roller.
US09621721 2000-07-24 2000-07-24 Variable spacing strand coating system and method Active 2020-10-17 US6520237B1 (en)

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US09621721 US6520237B1 (en) 2000-07-24 2000-07-24 Variable spacing strand coating system and method

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US09621721 US6520237B1 (en) 2000-07-24 2000-07-24 Variable spacing strand coating system and method
KR20010034435A KR100804619B1 (en) 2000-07-24 2001-06-18 Variable spacing strand coating apparatus and method
CN 01115994 CN100450639C (en) 2000-07-24 2001-06-29 Changeable pitch strip coating system and method
ES01116179T ES2584411T3 (en) 2000-07-24 2001-07-04 System and method of coating threads variable spacing therebetween
EP20010116179 EP1176232B1 (en) 2000-07-24 2001-07-04 Variable spacing strand coating system and method
CA 2352710 CA2352710C (en) 2000-07-24 2001-07-09 Variable spacing strand coating system and method
JP2001223113A JP2002105881A (en) 2000-07-24 2001-07-24 Tool for coating strand
US10147188 US6875296B2 (en) 2000-07-24 2002-05-16 Variable spacing strand coating method

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US10147188 Division US6875296B2 (en) 2000-07-24 2002-05-16 Variable spacing strand coating method

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US10147188 Active 2021-08-11 US6875296B2 (en) 2000-07-24 2002-05-16 Variable spacing strand coating method

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US10147188 Active 2021-08-11 US6875296B2 (en) 2000-07-24 2002-05-16 Variable spacing strand coating method

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EP (1) EP1176232B1 (en)
JP (1) JP2002105881A (en)
KR (1) KR100804619B1 (en)
CN (1) CN100450639C (en)
CA (1) CA2352710C (en)
ES (1) ES2584411T3 (en)

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